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Pipetting gun head

A pipetting gun and liquid pipetting technology, applied in the field of experimental equipment, can solve the problems of high hardness, brittleness and inaccurate pipetting of glass materials, and achieve the effects of low material cost, simple production and safe pipetting operation.

Active Publication Date: 2014-08-06
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the glass material is hard, lacks elasticity, and is fragile, the pipette head made of glass as a whole is not easy to dock with the pipette, and it is easy to leave gaps at the docking point, resulting in inaccurate pipetting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A pipette head, comprising a pipette main body 1, and a connecting pipe 2 for connecting the pipette main body 1 and the pipette gun, the pipette main body 1 includes a liquid suction end 1.3, a liquid storage chamber 1.4 and The tail of the gun head body 1.1, the tail of the gun head body 1.1 is provided with a boss-shaped connection port 1.2, the connection port 1.2 is inserted into one port of the connection pipe 2, namely port A2.1, and fixedly connected, and the other port of the connection pipe 2 is port B2. 2 Connect with the pipette gun. The material of the pipette head body 1 is glass, and the material of the connecting tube 2 is plastic. The distance between the maximum volume liquid level of the pipette gun and the end face of the connector port A2.1 is 15 mm to prevent the liquid from contacting Plastic part; the liquid suction end 1.3 is beak-shaped, the liquid storage chamber 1.4 is tubular with uniform diameter, the diameter of the tail 1.1 of the main bod...

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Abstract

The invention relates to a pipetting gun head, which is applicable to the operation of quantitatively transferring a liquid which is required to be transferred by a glass product. The pipetting gun head comprises a gun head main body and a connecting pipe, wherein the gun head main body comprises a beak-shaped liquid suction end, a tubular liquid storage chamber with uniform diameter and a gun head main body tail which are communicated with one another in sequence; the gun head main body tail is provided with a boss-shaped connector; the connector is inserted into an opening A of the connecting pipe and is fixedly connected with the opening A of the connecting pipe, and the other opening B of the connecting pipe is connected with a pipetting gun; the gun head main body is made of glass; the connecting pipe is made of plastic; the distance between the maximum volume liquid level of the pipetting gun and the end surface of the opening A of the connecting pipe is 15 mm; the diameter of the gun head main body tail is equal to the maximum diameter of the beak tail end of the liquid suction end and is not greater than the pipe diameter of the liquid storage chamber. The glass pipetting gun head can be in a straight pipe type or a bulb type; the glass pipetting gun head in the straight pipe type is suitable for small-capacity pipetting; the glass pipetting gun head in the bulb type is suitable for large-capacity pipetting. The pipetting gun head is simple in design, practical and low in material cost, and the related experimental operation is safe, reliable and fast.

Description

technical field [0001] The technology of the invention belongs to the technical field of experimental equipment, and in particular relates to a pipette tip, which is suitable for concentrated sulfuric acid, concentrated nitric acid and other liquids that must be transferred by glass products. Background technique [0002] Strong acid liquids such as concentrated sulfuric acid and concentrated nitric acid can only be pipetted with glass products. In some laboratory determination and analysis, a certain amount of strong acid liquid needs to be added in batches. For example, when the soil organic matter is determined by the potassium dichromate oxidation external heating method, 5 ml of concentrated sulfuric acid needs to be added. Since the current pipette tips are all plastic products, they cannot be used for pipetting some strong acid liquids, so glass pipettes can only be used for pipetting, but this will consume more precious time. And when measuring a large number of sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/02
Inventor 王卫谢小立陈安磊吴小红
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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